<template>
<div>
  <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">
      首页
    </el-breadcrumb-item>
    <el-breadcrumb-item>商品管理</el-breadcrumb-item>
    <el-breadcrumb-item>商品列表</el-breadcrumb-item>
  </el-breadcrumb>
  <el-card>
    <el-row :gutter="20">
      <el-col :span="8">
        <el-input placeholder="请输入内容" v-model="queryInfo.query" :clearable="true" @clear="getGoodsList">
          <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
        </el-input>
      </el-col>
      <el-col :span="4">
        <el-button type="primary" @click="goAddPage">添加商品</el-button>
      </el-col>
    </el-row>
    <el-table :data="goodLists" :border="true" :stripe="true">
      <el-table-column type="index"></el-table-column>
      <el-table-column label="商品名称" prop="goods_name"></el-table-column>
      <el-table-column label="商品价格(元)" prop="goods_price" width="90px"></el-table-column>
      <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
      <el-table-column label="创建时间" prop="add_time" width="140px">
        <template slot-scope="scope">
          {{ scope.row.add_time | dateFormat }}
        </template>
      </el-table-column>
      <el-table-column label="操作" width="130px">
        <template slot-scope="scope">
          <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.goods_id)"></el-button>
          <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
        </template>
      </el-table-column>
    </el-table>
    <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total" :background="true">
    </el-pagination>
  </el-card>

  <!-- 修改用户的对话框 -->
  <el-dialog title="修改商品" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
    <el-form :model="editForm" label-width="70px">
      <el-form-item label="商品名称" prop="goods_name">
        <el-input v-model="editForm.goods_name"></el-input>
      </el-form-item>
      <el-form-item label="数量" prop="goods_number">
        <el-input v-model="editForm.goods_number"></el-input>
      </el-form-item>
      <el-form-item label="价格" prop="goods_price">
        <el-input v-model="editForm.goods_price"></el-input>
      </el-form-item>
      <el-form-item label="重量" prop="goods_weight">
        <el-input v-model="editForm.goods_weight"></el-input>
      </el-form-item>
    </el-form>
    <span slot="footer" class="dialog-footer">
      <el-button @click="editDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="editUserInfo">确 定</el-button>
    </span>
  </el-dialog>
</div>
</template>

<script>
export default {
  data() {
    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      goodLists: [],
      total: 0,
      // 控制修改商品对话框的显示与隐藏
      editDialogVisible: false,
      editForm: {
        goods_id: '',
        goods_name: '',
        goods_price: '',
        goods_number: '',
        goods_weight: ''
      }
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    async getGoodsList() {
      const {
        data: res
      } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败')
      }
      this.goodLists = res.data.records
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 展示编辑商品的对话框
    async showEditDialog(id) {
      console.log(id)
      const {
        data: res
      } = await this.$http.get('goods/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询商品信息失败！')
      }
      this.editForm = res.data
      console.log(this.editForm)
      this.editDialogVisible = true
    },
    // 监听修改商品对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改商品信息并提交
    async editUserInfo() {
      // 发起修改商品信息的数据请求
      const {
        data: res
      } = await this.$http.put('goods/' + this.editForm.goods_id, this.editForm)
      if (res.meta.status !== 200) {
        return this.$message.error('更新商品信息失败！')
      }
      // 关闭对话框
      this.editDialogVisible = false
      // 刷新数据列表
      // 提示修改成功
      this.$message.success('更新商品信息成功！')
      this.getGoodsList()
    },
    async removeById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      const {
        data: res
      } = await this.$http.delete('goods/' + id)
      if (res.meta.status !== 204) {
        return this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      this.getGoodsList()
    },
    goAddPage() {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>

</style>
